201101283 六、發明說明： 【發明所屬之技術領域】 本毛月係有關於-種光源控制機制，尤指—種背光控制之方法 及其裝置。 【先前技術】 〇 目則Wa/La』i7Fil於顯示畫祕制所接收的晝面訊镜是為 動態晝面或靜態晝面，因此，習知技術必須額外利用其它的偵測電 路、記憶體或暫存裝置以比較先前顯示之畫面來判斷目前所接收之 畫面是否為靜態晝面或動態畫面，若為動態畫面，則習知技術會啟 動閃爍式的背光控制來挺供液晶顯示器的背光源以顯示畫面，然 而，如此的背光控制方式會造成中央處理器/時序控制器與資料匯流 排的負擔增加，加上額外的偵測電路與資料匯流排也是一個很耗電 的裝置，因此採用此方法會消耗許多電力。 0 【發明内容】 有鑑於此，本發明的目的之一在於提供一種背光控制之方法及 其裝置，以解決習知技術所面臨的問題，並提高動態晝面的顯示品 質以解決影像殘留(image fesidue)或’模知(blur)之問題。 1 < · r 1 ' 根據本發明之一實施例，其係提供一種背光控制之方法。該方 法包含有接收一顯示同步訊號；依據該顯示同步訊號來產生—背光 4 201101283 控制訊號；以及依據該背光控制訊號來驅動一背光源。 根據本發明之另一實施例，其係提供一種背光控制之裝置。兮 裝置包含有一訊號接收電路，用來接收一顯示同步訊號；—控制電 路輕接於s玄δίΐ说接收電路，用來依據該顯示同步訊號來產生—背 光控制訊號；以及一驅動電路，耦接於該控制電路，用來依據該背 光控制訊號來驅動一背光源。 〇 【實施方式】 在說明書及後續的申請專利範圍當中使用了某些詞彙來指稱特 疋的兀件。所屬領域中具有通常知識者應可理解，硬體製造商可能 會用不同的名詞來稱呼同一個元件.。本說明書及後續的申請專利範 圍並不以名稱的差異祕‘區分元輪方式，而是以元件在功能上 的差異來作為區分的準則。在通篇說明書及後續的請求項當中所提 ◎及的「「包含」係為-開放式的用語，故應解釋成「包含但不限定於」。 以外三「輕接」一詞在此係包含任何直接及間接的電氣連接手段。因 此，若文中描述一第一裝置輕接於一第二裝置，則代表該第-裝置 可直接電氣連接於該第二裝置，或透過其他裝置或連接手段間接地 電氣連接至該第二裝置。 明參考第1圖’第1圖係為本發明背光控制之方法的一實施例 的_圖。背光控制的運作歸納如下，如第！圖所示，首先，於步 中接收顯示同步訊號(例如水平同步訊號及/或垂直同步 5 201101283 訊號）’·接著，於步驟104中，依據該顯示同步訊號來產生一 制訊號，值得注意的是’於本發明之—較佳實施例中，產生該背^ 控制訊號的步驟的運作另可經由除頻該顯示同步訊號來產生該背光 控制訊號3》面，上述除頻的澤作可依據驅動該背光源於複數 個不同亮度輸出狀態之間不斷切換的一切換頻率來對該顯示同步訊 號進行除頻以產生所f的背光控制訊號，其中上述的複數個亮度輸 出狀態包含有-背光源全亮狀態與一背光源全暗狀態，然而，此僅 〇作為範例制’並_來作為本發_關條件，因此，於步驟ι〇6 中’便依據該背光控制訊號來驅動一背光源對應至複數個亮度輸出 狀態而達到背光亮度控制的目的。值得注意的是，上述除頻的運作 係利用降頻-較高頻率的週期訊號(亦即顯示同步訊號)來產生一較 低頻率的軸訊號’以便適當地控制背絲來提高誠晝面的顯示 品質並解決影像殘留(in^geresidue):或模糊(blur)之問題，舉例來 說，該背光源係利用荃亮*全暗kg以減低人眼對移動畫面之中間 態反應。201101283 VI. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a light source control mechanism, and more particularly to a method and apparatus for backlight control. [Prior Art] The eye/image of the Wa/La』i7Fil received by the i7Fil is dynamic or static. Therefore, the conventional technology must additionally use other detection circuits and memories. Or the temporary storage device compares the previously displayed screen to determine whether the currently received picture is a static picture or a dynamic picture. If it is a dynamic picture, the conventional technology activates a flashing backlight control to provide a backlight for the liquid crystal display. In order to display the picture, however, such a backlight control method will increase the burden on the central processing unit/timing controller and the data bus, and the additional detection circuit and data bus are also a very power-consuming device, so this is adopted. The method consumes a lot of power. [Invention] In view of the above, one of the objects of the present invention is to provide a method and device for backlight control to solve the problems faced by the prior art, and improve the display quality of the dynamic face to solve the image residual (image) Fesidue) or 'blur' problem. 1 < r 1 ' According to an embodiment of the invention, a method of backlight control is provided. The method includes receiving a display synchronization signal, generating a backlight according to the display synchronization signal, and generating a backlight according to the backlight control signal. According to another embodiment of the present invention, there is provided a device for backlight control. The device includes a signal receiving circuit for receiving a display synchronization signal; the control circuit is lightly coupled to the receiving circuit for generating a backlight control signal according to the display synchronization signal; and a driving circuit coupled The control circuit is configured to drive a backlight according to the backlight control signal. 〇 [Embodiment] Some terms are used in the specification and subsequent patent applications to refer to the special components. Those of ordinary skill in the art should understand that a hardware manufacturer may refer to the same component by a different noun. This specification and the subsequent patent application scope do not distinguish the meta wheel method by the difference of the name, but the difference in function of the component as the criterion for distinguishing. The "includes" mentioned in the overall specification and subsequent claims are "open words" and should be interpreted as "including but not limited to". The term "light" is used in this context to include any direct and indirect electrical connection. Thus, if a first device is described as being lightly coupled to a second device, it means that the first device can be directly electrically connected to the second device or indirectly electrically connected to the second device through other devices or connection means. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing an embodiment of a method of backlight control of the present invention. The operation of backlight control is summarized as follows, such as the first! As shown in the figure, first, in the step, the display synchronization signal (for example, horizontal synchronization signal and/or vertical synchronization 5 201101283 signal) is received. Then, in step 104, a signal is generated according to the display synchronization signal, which is notable. In the preferred embodiment of the present invention, the step of generating the back control signal may further generate the backlight control signal 3 by dividing the display synchronization signal, and the above-mentioned frequency division may be based on Driving the backlight to a frequency of switching between a plurality of different brightness output states to divide the display synchronization signal to generate a backlight control signal of the f, wherein the plurality of brightness output states include a backlight The full-bright state and a backlight are all dark state. However, this is only used as an example of 'and_ as a local_off condition, therefore, in step ι〇6, a backlight is driven according to the backlight control signal. Corresponding to a plurality of brightness output states to achieve backlight brightness control. It is worth noting that the operation of the above-mentioned frequency division uses a frequency-down frequency signal (ie, displaying a synchronization signal) to generate a lower frequency axis signal 'to properly control the back wire to improve the sincerity. Display quality and solve image residual (in^geresidue): or blur (blur) problem, for example, the backlight uses the bright * full dark kg to reduce the human eye's reaction to the intermediate state of the moving picture.
J 請注意，除頻操作可運作任何可行的方式來加以實現，舉例來 說’於一實施例中，步驟104中的除頻操作可利用計數器(c〇unter) 來計算該顯示同步訊號之每一週期’並於計數值達到一臨界值時進 行準位切換(toggle)，如此一來，經由該臨界值的適當設計，便可達 到除頻該顯示同步訊號來產生所需之背光控制訊號以控制背光源之 驅動’舉例來說，假若背筅源須於祓教個不同亮度輸出狀態之間不 斷切換，則可依據複數個不同亮度輸出狀態的切換頻率來適當地設 6 201101283 定上述计數值的臨界值。請注意，利用計數器來實現除頻操作僅作 為範例說明之用，並非用來作為本發明的限制條件。 δ#參考第2圖，第2圖係為本發明一實施例之背光控制之裝置 200的示意圖。如第2圖所示，裝置2〇〇包含有一訊號接收電路2〇2, 用來接收一顯示同步訊號S1 ; —技制電路2〇4 ,耦接於訊號接收電 路202 ’用來依據顯示同步訊號S1來產生一背光控制訊號幻；一 Ο顯示模組210’用來依據顯示同步訊號S1顯示畫面(frame)，其中該 晝面係可為一動態晝面(motion frame)或一靜態畫面(statie frame); 一 背光源(亦即背光模組)208，用來提供顯示模組(例如液晶顯示面 板)210所需的光源；一驅動電路206，耦接於控制電路2〇4，用來 依據背光控制訊號S2來驅動背光源208。於一較佳實施例中，顯示 模組210係為小尺寸的液晶顯示面板，因此驅動電路2〇6便依據背 光控制訊號S 2來控制背；^源208於一背光源全亮狀態與一背光源全 Q暗狀態之間不斷切換，·'，除頻觀另依據驅動背光源208 於複數個不同亮度輸出狀態之間不斷切換的一切換頻率來除頻顯示 同步訊號S1以產生所要的背光控制訊號S2，其中該複數個亮度輸 出狀態包含有一背光源全亮狀態與一背光源全暗狀態。 請注意’上述的除頻單元2042可應用任何具有除頻功能的元件 來加以實作。請參考第3圖，第3圖係為本發明另一實施例之背光 控制之裝置300的示意圖。如第3圖所示，裝置3〇〇包含有訊號接 收電路202 ; -控制電路304 ;驅私電路2〇6 ;背光源2〇8 ;以及顯 Ο Ο 201101283 示模組 係運用計數II 3〇42來實作第2 _示之除鮮元·。由於裝置 300中其他元件的運作與功能已於上詳述，故不另於崎述。、 第4圖係為顯示同步訊號S1與背光控制訊號幻的時序圖。如 第4圖所示，顯示同步訊號S1係為裝置2〇原先所接收之週期性訊 號(其具有較高頻率），ώ背光控制訊德a係為顯示同步訊號幻經 由上述實施例所示之除頻運作除頻而得，於此一實施例中，除頻運 作所對應的除頻因子為3，因此，顯而易見地，背光控制訊號幻之 ，率F1小於顯示同步訊號S1之頻率F2，其中❿刷，換句話說， 背光控制域S2之職大於顯示同步峨S1之週期，如此一來， 驅動電路2〇6便可參考背光控制訊號S2來控制背光源避的驅動。 因此’本發明_露之f光㈣之綠及其裝置斜全亮或全 暗狀態以減低人眼對移動畫面之中間態反應。請注意，由於熟知此 項技藝之人士於閱讀上攀實施例的麵露後應可輕易瞭解其内容，故 進一步的制便纽省“不雜故 2賴，本__紅-姆光㈣之綠及其裝置係提 畫面_示品質以解決影像殘留㈣ 、、°通’換δ之’本發明所揭露之—種背光控制之方法及其裝置係 2人眼對移動晝面之中間態反應來提高顯示品質，並可增加畫面 的解析度，讓賴晝崎示更加清晰。 — 201101283 “ x上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍 所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。 【圖式簡單說明】 第1圖係為本發明背光控制之方法的一實施例的流程圖。 第2圖係為本發明背光控制之裝置的一實施例的功能方塊圖。 第3圖係為本發明背光控制之裝置的另一實施例的功能方塊圖圖。 〇 第4圖係為顯示同步訊號與背光控制訊號的時序圖。 【主要元件符號說明】 200、300 裝置 202 訊號接收電路 204 > 304 控制電路 2042 除頻單元 3042 計數器 206 驅動電路 208 背光U組 210 顯示模組J Please note that the frequency division operation can be implemented in any feasible way. For example, in an embodiment, the frequency division operation in step 104 can use a counter (c〇unter) to calculate the display synchronization signal. One cycle 'and toggles when the count value reaches a critical value. Thus, by appropriately designing the threshold value, the display synchronization signal can be divided to generate the required backlight control signal. Controlling the driving of the backlight. For example, if the source of the backlight is to be switched between different brightness output states, it can be set according to the switching frequency of a plurality of different brightness output states. The critical value. Please note that the use of a counter to implement the frequency division operation is for illustrative purposes only and is not intended to be a limitation of the present invention. Δ# Referring to Fig. 2, Fig. 2 is a schematic diagram of a device 200 for backlight control according to an embodiment of the present invention. As shown in FIG. 2, the device 2A includes a signal receiving circuit 2〇2 for receiving a display synchronization signal S1, and a technical circuit 2〇4 coupled to the signal receiving circuit 202' for synchronizing according to the display. The signal S1 is used to generate a backlight control signal; the display module 210' is configured to display a frame according to the display synchronization signal S1, wherein the face can be a dynamic motion frame or a static image ( A backlight (a backlight module) 208 is provided for providing a light source required for a display module (eg, a liquid crystal display panel) 210. A driving circuit 206 is coupled to the control circuit 2〇4 for The backlight 208 is driven in accordance with the backlight control signal S2. In a preferred embodiment, the display module 210 is a small-sized liquid crystal display panel. Therefore, the driving circuit 2〇6 controls the back according to the backlight control signal S2. The source 208 is in a backlight full state and a backlight. The backlight is continuously switched between the full Q dark states, and the frequency is displayed in accordance with the switching frequency of the driving backlight 208 continuously switching between the plurality of different brightness output states to display the synchronization signal S1 to generate the desired backlight. The control signal S2, wherein the plurality of brightness output states comprise a backlight full light state and a backlight full dark state. Please note that the above-described frequency dividing unit 2042 can be implemented by applying any component having a frequency dividing function. Please refer to FIG. 3, which is a schematic diagram of a backlight control device 300 according to another embodiment of the present invention. As shown in FIG. 3, the device 3A includes a signal receiving circuit 202; a control circuit 304; a driving circuit 2〇6; a backlight 2〇8; and a display Ο 201101283 42 to implement the second _ show the removal of fresh elements. Since the operation and functions of other components in the device 300 have been detailed above, it is not described elsewhere. Figure 4 is a timing diagram showing the synchronization signal S1 and the backlight control signal. As shown in FIG. 4, the display synchronization signal S1 is the periodic signal received by the device 2 (which has a higher frequency), and the backlight control signal is a display synchronization signal. The frequency division operation is divided by frequency. In this embodiment, the frequency division factor corresponding to the frequency division operation is 3. Therefore, it is obvious that the backlight control signal is audible, and the rate F1 is smaller than the frequency F2 of the display synchronization signal S1, wherein In other words, the backlight control domain S2 is larger than the period of the display sync 峨S1, so that the drive circuit 2〇6 can control the backlight avoidance drive with reference to the backlight control signal S2. Therefore, the green color of the invention and the device are obliquely full or dark to reduce the reaction of the human eye to the intermediate state of the moving picture. Please note that since the person familiar with the art should be able to easily understand the contents after reading the exposure of the embodiment, the further system of the province will not be misunderstood, this __红-姆光(四) Green and its device system to show the picture _ show quality to solve the image residue (4), ° pass 'change δ'. The method of backlight control and its device system are two human eyes react to the intermediate state of the moving face To improve the display quality, and to increase the resolution of the picture, let Lai Qiqi show more clearly. — 201101283 " x is only a preferred embodiment of the present invention, and the equivalent variation of the patent application scope of the present invention And modifications are intended to be within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart showing an embodiment of a method of backlight control of the present invention. Figure 2 is a functional block diagram of an embodiment of the apparatus for backlight control of the present invention. Figure 3 is a functional block diagram of another embodiment of the apparatus for backlight control of the present invention. 〇 Figure 4 is a timing diagram showing the sync signal and backlight control signals. [Main component symbol description] 200, 300 device 202 signal receiving circuit 204 > 304 control circuit 2042 frequency dividing unit 3042 counter 206 driving circuit 208 backlight U group 210 display module